Move to kernel style SPDX license identifiers
[babeltrace.git] / tests / bindings / python / bt2 / test_field.py
index 61eeb93337de426a36b2377f1e987536c65130ff..37afffb54a422ee2e7ec0e362fefa6b342958359 100644 (file)
@@ -1,20 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 EfficiOS Inc.
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; only version 2
-# of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-#
 
 from functools import partial, partialmethod
 import operator
@@ -22,14 +9,12 @@ import unittest
 import math
 import copy
 import itertools
+import collections
 import bt2
-from utils import get_default_trace_class
+from utils import get_default_trace_class, create_const_field
 
 
-_COMP_BINOPS = (
-    operator.eq,
-    operator.ne,
-)
+_COMP_BINOPS = (operator.eq, operator.ne)
 
 
 # Create and return a stream with the field classes part of its stream packet
@@ -37,13 +22,16 @@ _COMP_BINOPS = (
 #
 # The stream is part of a dummy trace created from trace class `tc`.
 
+
 def _create_stream(tc, ctx_field_classes):
     packet_context_fc = tc.create_structure_field_class()
     for name, fc in ctx_field_classes:
         packet_context_fc.append_member(name, fc)
 
     trace = tc()
-    stream_class = tc.create_stream_class(packet_context_field_class=packet_context_fc)
+    stream_class = tc.create_stream_class(
+        packet_context_field_class=packet_context_fc, supports_packets=True
+    )
 
     stream = trace.create_stream(stream_class)
     return stream
@@ -54,6 +42,7 @@ def _create_stream(tc, ctx_field_classes):
 # The field is part of a dummy stream, itself part of a dummy trace created
 # from trace class `tc`.
 
+
 def _create_field(tc, field_class):
     field_name = 'field'
     stream = _create_stream(tc, [(field_name, field_class)])
@@ -66,6 +55,7 @@ def _create_field(tc, field_class):
 # The field is part of a dummy stream, itself part of a dummy trace created
 # from trace class `tc`.  It is made out of a dummy string field class.
 
+
 def _create_string_field(tc):
     field_name = 'string_field'
     stream = _create_stream(tc, [(field_name, tc.create_string_field_class())])
@@ -79,6 +69,7 @@ def _create_string_field(tc):
 # from trace class `tc`.  It is made out of a dummy static array field class,
 # with a dummy integer field class as element class.
 
+
 def _create_int_array_field(tc, length):
     elem_fc = tc.create_signed_integer_field_class(32)
     fc = tc.create_static_array_field_class(elem_fc, length)
@@ -94,6 +85,7 @@ def _create_int_array_field(tc, length):
 # from trace class `tc`.  It is made out of a dummy static array field class,
 # with a dummy integer field class as element and length classes.
 
+
 def _create_dynamic_array(tc):
     elem_fc = tc.create_signed_integer_field_class(32)
     len_fc = tc.create_signed_integer_field_class(32)
@@ -111,6 +103,7 @@ def _create_dynamic_array(tc):
 # from trace class `tc`.  It is made out of a dummy static array field class,
 # with a dummy struct field class as element class.
 
+
 def _create_struct_array_field(tc, length):
     elem_fc = tc.create_structure_field_class()
     fc = tc.create_static_array_field_class(elem_fc, length)
@@ -120,56 +113,136 @@ def _create_struct_array_field(tc, length):
     return packet.context_field[field_name]
 
 
+class BitArrayFieldTestCase(unittest.TestCase):
+    def _create_field(self):
+        return _create_field(self._tc, self._tc.create_bit_array_field_class(24))
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._def_value = 15497
+        self._def = self._create_field()
+        self._def.value_as_integer = self._def_value
+        self._def_new_value = 101542
+
+    def test_assign_invalid_type(self):
+        with self.assertRaises(TypeError):
+            self._def.value_as_integer = 'onze'
+
+    def test_assign(self):
+        self._def.value_as_integer = 199
+        self.assertEqual(self._def.value_as_integer, 199)
+
+    def test_assign_masked(self):
+        self._def.value_as_integer = 0xE1549BB
+        self.assertEqual(self._def.value_as_integer, 0xE1549BB & ((1 << 24) - 1))
+
+    def test_eq(self):
+        other = self._create_field()
+        other.value_as_integer = self._def_value
+        self.assertEqual(self._def, other)
+
+    def test_ne_same_type(self):
+        other = self._create_field()
+        other.value_as_integer = self._def_value - 1
+        self.assertNotEqual(self._def, other)
+
+    def test_ne_diff_type(self):
+        self.assertNotEqual(self._def, self._def_value)
+
+    def test_len(self):
+        self.assertEqual(len(self._def), 24)
+
+    def test_str(self):
+        self.assertEqual(str(self._def), str(self._def_value))
+
+    def test_repr(self):
+        self.assertEqual(repr(self._def), repr(self._def_value))
+
+
+# Base class for numeric field test cases.
+#
+# To be compatible with this base class, a derived class must, in its
+# setUp() method:
+#
+# * Set `self._def` to a field object with an arbitrary value.
+# * Set `self._def_value` to the equivalent value of `self._def`.
 class _TestNumericField:
+    # Tries the binary operation `op`:
+    #
+    # 1. Between `self._def`, which is a field object, and `rhs`.
+    # 2. Between `self._def_value`, which is the raw value of
+    #    `self._def`, and `rhs`.
+    #
+    # Returns the results of 1. and 2.
+    #
+    # If there's an exception while performing 1. or 2., asserts that
+    # both operations raised exceptions, that both exceptions have the
+    # same type, and returns `None` for both results.
     def _binop(self, op, rhs):
-        rexc = None
-        rvexc = None
+        type_rexc = None
+        type_rvexc = None
         comp_value = rhs
 
+        # try with field object
         try:
             r = op(self._def, rhs)
         except Exception as e:
-            rexc = e
+            type_rexc = type(e)
 
+        # try with value
         try:
             rv = op(self._def_value, comp_value)
         except Exception as e:
-            rvexc = e
+            type_rvexc = type(e)
 
-        if rexc is not None or rvexc is not None:
+        if type_rexc is not None or type_rvexc is not None:
             # at least one of the operations raised an exception: in
             # this case both operations should have raised the same
             # type of exception (division by zero, bit shift with a
             # floating point number operand, etc.)
-            self.assertIs(type(rexc), type(rvexc))
+            self.assertIs(type_rexc, type_rvexc)
             return None, None
 
         return r, rv
 
+    # Tries the unary operation `op`:
+    #
+    # 1. On `self._def`, which is a field object.
+    # 2. On `self._def_value`, which is the value of `self._def`.
+    #
+    # Returns the results of 1. and 2.
+    #
+    # If there's an exception while performing 1. or 2., asserts that
+    # both operations raised exceptions, that both exceptions have the
+    # same type, and returns `None` for both results.
     def _unaryop(self, op):
-        rexc = None
-        rvexc = None
+        type_rexc = None
+        type_rvexc = None
 
+        # try with field object
         try:
             r = op(self._def)
         except Exception as e:
-            rexc = e
+            type_rexc = type(e)
 
+        # try with value
         try:
             rv = op(self._def_value)
         except Exception as e:
-            rvexc = e
+            type_rvexc = type(e)
 
-        if rexc is not None or rvexc is not None:
+        if type_rexc is not None or type_rvexc is not None:
             # at least one of the operations raised an exception: in
             # this case both operations should have raised the same
             # type of exception (division by zero, bit shift with a
             # floating point number operand, etc.)
-            self.assertIs(type(rexc), type(rvexc))
+            self.assertIs(type_rexc, type_rvexc)
             return None, None
 
         return r, rv
 
+    # Tests that the unary operation `op` gives results with the same
+    # type for both `self._def` and `self._def_value`.
     def _test_unaryop_type(self, op):
         r, rv = self._unaryop(op)
 
@@ -178,6 +251,9 @@ class _TestNumericField:
 
         self.assertIsInstance(r, type(rv))
 
+    # Tests that the unary operation `op` gives results with the same
+    # value for both `self._def` and `self._def_value`. This uses the
+    # __eq__() operator of `self._def`.
     def _test_unaryop_value(self, op):
         r, rv = self._unaryop(op)
 
@@ -186,16 +262,22 @@ class _TestNumericField:
 
         self.assertEqual(r, rv)
 
+    # Tests that the unary operation `op`, when applied to `self._def`,
+    # does not change its underlying BT object address.
     def _test_unaryop_addr_same(self, op):
         addr_before = self._def.addr
         self._unaryop(op)
         self.assertEqual(self._def.addr, addr_before)
 
+    # Tests that the unary operation `op`, when applied to `self._def`,
+    # does not change its value.
     def _test_unaryop_value_same(self, op):
         value_before = copy.copy(self._def_value)
         self._unaryop(op)
         self.assertEqual(self._def, value_before)
 
+    # Tests that the binary operation `op` gives results with the same
+    # type for both `self._def` and `self._def_value`.
     def _test_binop_type(self, op, rhs):
         r, rv = self._binop(op, rhs)
 
@@ -208,6 +290,9 @@ class _TestNumericField:
         else:
             self.assertIsInstance(r, type(rv))
 
+    # Tests that the binary operation `op` gives results with the same
+    # value for both `self._def` and `self._def_value`. This uses the
+    # __eq__() operator of `self._def`.
     def _test_binop_value(self, op, rhs):
         r, rv = self._binop(op, rhs)
 
@@ -216,81 +301,60 @@ class _TestNumericField:
 
         self.assertEqual(r, rv)
 
+    # Tests that the binary operation `op`, when applied to `self._def`,
+    # does not change its underlying BT object address.
     def _test_binop_lhs_addr_same(self, op, rhs):
         addr_before = self._def.addr
         r, rv = self._binop(op, rhs)
         self.assertEqual(self._def.addr, addr_before)
 
-    @unittest.skip('copy is not implemented')
+    # Tests that the binary operation `op`, when applied to `self._def`,
+    # does not change its value.
     def _test_binop_lhs_value_same(self, op, rhs):
-        value_before = copy.copy(self._def)
+        value_before = copy.copy(self._def_value)
         r, rv = self._binop(op, rhs)
         self.assertEqual(self._def, value_before)
 
-    def _test_binop_invalid_unknown(self, op):
-        if op in _COMP_BINOPS:
-            self.skipTest('not testing')
-
-        class A:
-            pass
-
-        with self.assertRaises(TypeError):
-            op(self._def, A())
-
-    def _test_binop_invalid_none(self, op):
-        if op in _COMP_BINOPS:
-            self.skipTest('not testing')
-
-        with self.assertRaises(TypeError):
-            op(self._def, None)
-
-    def _test_ibinop_value(self, op, rhs):
-        r, rv = self._binop(op, rhs)
-
-        if r is None:
-            return
-
-        # The inplace operators are special for field objects because
-        # they do not return a new, immutable object like it's the case
-        # for Python numbers. In Python, `a += 2`, where `a` is a number
-        # object, assigns a new number object reference to `a`, dropping
-        # the old reference. Since BT's field objects are mutable, we
-        # modify their internal value with the inplace operators. This
-        # means however that we can lose data in the process, for
-        # example:
-        #
-        #     int_value_obj += 3.3
-        #
-        # Here, if `int_value_obj` is a Python `int` with the value 2,
-        # it would be a `float` object after this, holding the value
-        # 5.3. In our case, if `int_value_obj` is an integer field
-        # object, 3.3 is converted to an `int` object (3) and added to
-        # the current value of `int_value_obj`, so after this the value
-        # of the object is 5. This does not compare to 5.3, which is
-        # why we also use the `int()` type here.
-        if isinstance(self._def, bt2.field._IntegerField):
-            rv = int(rv)
-
-        self.assertEqual(r, rv)
-
-    def _test_ibinop_type(self, op, rhs):
-        r, rv = self._binop(op, rhs)
-
-        if r is None:
-            return
-
-        self.assertIs(r, self._def)
-
-    def _test_ibinop_invalid_unknown(self, op):
+    # The methods below which take the `test_cb` and/or `op` parameters
+    # are meant to be used with one of the _test_binop_*() functions
+    # above as `test_cb` and a binary operator function as `op`.
+    #
+    # For example:
+    #
+    #     self._test_binop_rhs_pos_int(self._test_binop_value,
+    #                                  operator.add)
+    #
+    # This tests that a numeric field object added to a positive integer
+    # value gives a result with the expected value.
+    #
+    # `vint` and `vfloat` mean a signed integer value object and a real
+    # value object.
+
+    def _test_binop_unknown(self, op):
         class A:
             pass
 
-        with self.assertRaises(TypeError):
-            op(self._def, A())
-
-    def _test_ibinop_invalid_none(self, op):
-        with self.assertRaises(TypeError):
-            op(self._def, None)
+        # Operators == and != are defined when comparing the field to an
+        # arbitrary object.
+        if op is operator.eq:
+            self.assertIs(op(self._def, A()), False)
+        elif op is operator.ne:
+            self.assertIs(op(self._def, A()), True)
+        else:
+            # But not other operators.
+            with self.assertRaises(TypeError):
+                op(self._def, A())
+
+    def _test_binop_none(self, op):
+        # Operators == and != are defined when comparing the field to None.
+        if op is operator.eq:
+            self.assertIs(op(self._def, None), False)
+        elif op is operator.ne:
+            self.assertIs(op(self._def, None), True)
+        else:
+            # But not other operators.
+            with self.assertRaises(TypeError):
+                op(self._def, None)
 
     def _test_binop_rhs_false(self, test_cb, op):
         test_cb(op, False)
@@ -334,6 +398,12 @@ class _TestNumericField:
     def _test_binop_rhs_zero_vfloat(self, test_cb, op):
         test_cb(op, bt2.create_value(0.0))
 
+    def _test_binop_rhs_complex(self, test_cb, op):
+        test_cb(op, -23 + 19j)
+
+    def _test_binop_rhs_zero_complex(self, test_cb, op):
+        test_cb(op, 0j)
+
     def _test_binop_type_false(self, op):
         self._test_binop_rhs_false(self._test_binop_type, op)
 
@@ -376,6 +446,12 @@ class _TestNumericField:
     def _test_binop_type_zero_vfloat(self, op):
         self._test_binop_rhs_zero_vfloat(self._test_binop_type, op)
 
+    def _test_binop_type_complex(self, op):
+        self._test_binop_rhs_complex(self._test_binop_type, op)
+
+    def _test_binop_type_zero_complex(self, op):
+        self._test_binop_rhs_zero_complex(self._test_binop_type, op)
+
     def _test_binop_value_false(self, op):
         self._test_binop_rhs_false(self._test_binop_value, op)
 
@@ -418,6 +494,12 @@ class _TestNumericField:
     def _test_binop_value_zero_vfloat(self, op):
         self._test_binop_rhs_zero_vfloat(self._test_binop_value, op)
 
+    def _test_binop_value_complex(self, op):
+        self._test_binop_rhs_complex(self._test_binop_value, op)
+
+    def _test_binop_value_zero_complex(self, op):
+        self._test_binop_rhs_zero_complex(self._test_binop_value, op)
+
     def _test_binop_lhs_addr_same_false(self, op):
         self._test_binop_rhs_false(self._test_binop_lhs_addr_same, op)
 
@@ -460,6 +542,12 @@ class _TestNumericField:
     def _test_binop_lhs_addr_same_zero_vfloat(self, op):
         self._test_binop_rhs_zero_vfloat(self._test_binop_lhs_addr_same, op)
 
+    def _test_binop_lhs_addr_same_complex(self, op):
+        self._test_binop_rhs_complex(self._test_binop_lhs_addr_same, op)
+
+    def _test_binop_lhs_addr_same_zero_complex(self, op):
+        self._test_binop_rhs_zero_complex(self._test_binop_lhs_addr_same, op)
+
     def _test_binop_lhs_value_same_false(self, op):
         self._test_binop_rhs_false(self._test_binop_lhs_value_same, op)
 
@@ -502,89 +590,11 @@ class _TestNumericField:
     def _test_binop_lhs_value_same_zero_vfloat(self, op):
         self._test_binop_rhs_zero_vfloat(self._test_binop_lhs_value_same, op)
 
-    def _test_ibinop_type_false(self, op):
-        self._test_binop_rhs_false(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_true(self, op):
-        self._test_binop_rhs_true(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_pos_int(self, op):
-        self._test_binop_rhs_pos_int(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_neg_int(self, op):
-        self._test_binop_rhs_neg_int(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_zero_int(self, op):
-        self._test_binop_rhs_zero_int(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_pos_vint(self, op):
-        self._test_binop_rhs_pos_vint(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_neg_vint(self, op):
-        self._test_binop_rhs_neg_vint(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_zero_vint(self, op):
-        self._test_binop_rhs_zero_vint(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_pos_float(self, op):
-        self._test_binop_rhs_pos_float(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_neg_float(self, op):
-        self._test_binop_rhs_neg_float(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_zero_float(self, op):
-        self._test_binop_rhs_zero_float(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_pos_vfloat(self, op):
-        self._test_binop_rhs_pos_vfloat(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_neg_vfloat(self, op):
-        self._test_binop_rhs_neg_vfloat(self._test_ibinop_type, op)
-
-    def _test_ibinop_type_zero_vfloat(self, op):
-        self._test_binop_rhs_zero_vfloat(self._test_ibinop_type, op)
-
-    def _test_ibinop_value_false(self, op):
-        self._test_binop_rhs_false(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_true(self, op):
-        self._test_binop_rhs_true(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_pos_int(self, op):
-        self._test_binop_rhs_pos_int(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_neg_int(self, op):
-        self._test_binop_rhs_neg_int(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_zero_int(self, op):
-        self._test_binop_rhs_zero_int(self._test_ibinop_value, op)
+    def _test_binop_lhs_value_same_complex(self, op):
+        self._test_binop_rhs_complex(self._test_binop_lhs_value_same, op)
 
-    def _test_ibinop_value_pos_vint(self, op):
-        self._test_binop_rhs_pos_vint(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_neg_vint(self, op):
-        self._test_binop_rhs_neg_vint(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_zero_vint(self, op):
-        self._test_binop_rhs_zero_vint(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_pos_float(self, op):
-        self._test_binop_rhs_pos_float(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_neg_float(self, op):
-        self._test_binop_rhs_neg_float(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_zero_float(self, op):
-        self._test_binop_rhs_zero_float(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_pos_vfloat(self, op):
-        self._test_binop_rhs_pos_vfloat(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_neg_vfloat(self, op):
-        self._test_binop_rhs_neg_vfloat(self._test_ibinop_value, op)
-
-    def _test_ibinop_value_zero_vfloat(self, op):
-        self._test_binop_rhs_zero_vfloat(self._test_ibinop_value, op)
+    def _test_binop_lhs_value_same_zero_complex(self, op):
+        self._test_binop_rhs_zero_complex(self._test_binop_lhs_value_same, op)
 
     def test_bool_op(self):
         self.assertEqual(bool(self._def), bool(self._def_value))
@@ -601,19 +611,36 @@ class _TestNumericField:
     def test_str_op(self):
         self.assertEqual(str(self._def), str(self._def_value))
 
+    def test_hash_op(self):
+        with self.assertRaises(TypeError):
+            hash(self._def)
+
+    def test_const_hash_op(self):
+        self.assertEqual(hash(self._def_const), hash(self._def_value))
+
+    def test_const_hash_dict(self):
+        my_dict = {}
+        my_dict[self._def_const] = 'my_value'
+        self.assertEqual(my_dict[self._def_value], 'my_value')
+
     def test_eq_none(self):
         # Ignore this lint error:
         #   E711 comparison to None should be 'if cond is None:'
         # since this is what we want to test (even though not good practice).
-        self.assertFalse(self._def == None) # noqa: E711
+        self.assertFalse(self._def == None)  # noqa: E711
 
     def test_ne_none(self):
         # Ignore this lint error:
         #   E711 comparison to None should be 'if cond is not None:'
         # since this is what we want to test (even though not good practice).
-        self.assertTrue(self._def != None) # noqa: E711
+        self.assertTrue(self._def != None)  # noqa: E711
 
 
+# This is a list of binary operators used for
+# _inject_numeric_testing_methods().
+#
+# Each entry is a pair of binary operator name (used as part of the
+# created testing method's name) and operator function.
 _BINOPS = (
     ('lt', operator.lt),
     ('le', operator.le),
@@ -648,22 +675,11 @@ _BINOPS = (
 )
 
 
-_IBINOPS = (
-    ('iadd', operator.iadd),
-    ('iand', operator.iand),
-    ('ifloordiv', operator.ifloordiv),
-    ('ilshift', operator.ilshift),
-    ('imod', operator.imod),
-    ('imul', operator.imul),
-    ('ior', operator.ior),
-    ('ipow', operator.ipow),
-    ('irshift', operator.irshift),
-    ('isub', operator.isub),
-    ('itruediv', operator.itruediv),
-    ('ixor', operator.ixor),
-)
-
-
+# This is a list of unary operators used for
+# _inject_numeric_testing_methods().
+#
+# Each entry is a pair of unary operator name (used as part of the
+# created testing method's name) and operator function.
 _UNARYOPS = (
     ('neg', operator.neg),
     ('pos', operator.pos),
@@ -680,116 +696,495 @@ _UNARYOPS = (
 )
 
 
+# This function injects a bunch of testing methods to a numeric
+# field test case.
+#
+# It is meant to be used like this:
+#
+#     _inject_numeric_testing_methods(MyNumericFieldTestCase)
+#
+# This function injects:
+#
+# * One testing method for each _TestNumericField._test_binop_*()
+#   method, for each binary operator in the _BINOPS tuple.
+#
+# * One testing method for each _TestNumericField._test_unaryop*()
+#   method, for each unary operator in the _UNARYOPS tuple.
 def _inject_numeric_testing_methods(cls):
     def test_binop_name(suffix):
         return 'test_binop_{}_{}'.format(name, suffix)
 
-    def test_ibinop_name(suffix):
-        return 'test_ibinop_{}_{}'.format(name, suffix)
-
     def test_unaryop_name(suffix):
         return 'test_unaryop_{}_{}'.format(name, suffix)
 
     # inject testing methods for each binary operation
     for name, binop in _BINOPS:
-        setattr(cls, test_binop_name('invalid_unknown'), partialmethod(_TestNumericField._test_binop_invalid_unknown, op=binop))
-        setattr(cls, test_binop_name('invalid_none'), partialmethod(_TestNumericField._test_binop_invalid_none, op=binop))
-        setattr(cls, test_binop_name('type_true'), partialmethod(_TestNumericField._test_binop_type_true, op=binop))
-        setattr(cls, test_binop_name('type_pos_int'), partialmethod(_TestNumericField._test_binop_type_pos_int, op=binop))
-        setattr(cls, test_binop_name('type_pos_vint'), partialmethod(_TestNumericField._test_binop_type_pos_vint, op=binop))
-        setattr(cls, test_binop_name('value_true'), partialmethod(_TestNumericField._test_binop_value_true, op=binop))
-        setattr(cls, test_binop_name('value_pos_int'), partialmethod(_TestNumericField._test_binop_value_pos_int, op=binop))
-        setattr(cls, test_binop_name('value_pos_vint'), partialmethod(_TestNumericField._test_binop_value_pos_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_true'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_true, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_pos_int'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_pos_int, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_pos_vint'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_pos_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_true'), partialmethod(_TestNumericField._test_binop_lhs_value_same_true, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_pos_int'), partialmethod(_TestNumericField._test_binop_lhs_value_same_pos_int, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_pos_vint'), partialmethod(_TestNumericField._test_binop_lhs_value_same_pos_vint, op=binop))
-        setattr(cls, test_binop_name('type_neg_int'), partialmethod(_TestNumericField._test_binop_type_neg_int, op=binop))
-        setattr(cls, test_binop_name('type_neg_vint'), partialmethod(_TestNumericField._test_binop_type_neg_vint, op=binop))
-        setattr(cls, test_binop_name('value_neg_int'), partialmethod(_TestNumericField._test_binop_value_neg_int, op=binop))
-        setattr(cls, test_binop_name('value_neg_vint'), partialmethod(_TestNumericField._test_binop_value_neg_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_neg_int'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_neg_int, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_neg_vint'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_neg_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_neg_int'), partialmethod(_TestNumericField._test_binop_lhs_value_same_neg_int, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_neg_vint'), partialmethod(_TestNumericField._test_binop_lhs_value_same_neg_vint, op=binop))
-        setattr(cls, test_binop_name('type_false'), partialmethod(_TestNumericField._test_binop_type_false, op=binop))
-        setattr(cls, test_binop_name('type_zero_int'), partialmethod(_TestNumericField._test_binop_type_zero_int, op=binop))
-        setattr(cls, test_binop_name('type_zero_vint'), partialmethod(_TestNumericField._test_binop_type_zero_vint, op=binop))
-        setattr(cls, test_binop_name('value_false'), partialmethod(_TestNumericField._test_binop_value_false, op=binop))
-        setattr(cls, test_binop_name('value_zero_int'), partialmethod(_TestNumericField._test_binop_value_zero_int, op=binop))
-        setattr(cls, test_binop_name('value_zero_vint'), partialmethod(_TestNumericField._test_binop_value_zero_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_false'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_false, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_zero_int'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_zero_int, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_zero_vint'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_zero_vint, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_false'), partialmethod(_TestNumericField._test_binop_lhs_value_same_false, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_zero_int'), partialmethod(_TestNumericField._test_binop_lhs_value_same_zero_int, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_zero_vint'), partialmethod(_TestNumericField._test_binop_lhs_value_same_zero_vint, op=binop))
-        setattr(cls, test_binop_name('type_pos_float'), partialmethod(_TestNumericField._test_binop_type_pos_float, op=binop))
-        setattr(cls, test_binop_name('type_neg_float'), partialmethod(_TestNumericField._test_binop_type_neg_float, op=binop))
-        setattr(cls, test_binop_name('type_pos_vfloat'), partialmethod(_TestNumericField._test_binop_type_pos_vfloat, op=binop))
-        setattr(cls, test_binop_name('type_neg_vfloat'), partialmethod(_TestNumericField._test_binop_type_neg_vfloat, op=binop))
-        setattr(cls, test_binop_name('value_pos_float'), partialmethod(_TestNumericField._test_binop_value_pos_float, op=binop))
-        setattr(cls, test_binop_name('value_neg_float'), partialmethod(_TestNumericField._test_binop_value_neg_float, op=binop))
-        setattr(cls, test_binop_name('value_pos_vfloat'), partialmethod(_TestNumericField._test_binop_value_pos_vfloat, op=binop))
-        setattr(cls, test_binop_name('value_neg_vfloat'), partialmethod(_TestNumericField._test_binop_value_neg_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_pos_float'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_pos_float, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_neg_float'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_neg_float, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_pos_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_pos_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_neg_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_neg_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_pos_float'), partialmethod(_TestNumericField._test_binop_lhs_value_same_pos_float, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_neg_float'), partialmethod(_TestNumericField._test_binop_lhs_value_same_neg_float, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_pos_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_value_same_pos_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_neg_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_value_same_neg_vfloat, op=binop))
-        setattr(cls, test_binop_name('type_zero_float'), partialmethod(_TestNumericField._test_binop_type_zero_float, op=binop))
-        setattr(cls, test_binop_name('type_zero_vfloat'), partialmethod(_TestNumericField._test_binop_type_zero_vfloat, op=binop))
-        setattr(cls, test_binop_name('value_zero_float'), partialmethod(_TestNumericField._test_binop_value_zero_float, op=binop))
-        setattr(cls, test_binop_name('value_zero_vfloat'), partialmethod(_TestNumericField._test_binop_value_zero_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_zero_float'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_zero_float, op=binop))
-        setattr(cls, test_binop_name('lhs_addr_same_zero_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_addr_same_zero_vfloat, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_zero_float'), partialmethod(_TestNumericField._test_binop_lhs_value_same_zero_float, op=binop))
-        setattr(cls, test_binop_name('lhs_value_same_zero_vfloat'), partialmethod(_TestNumericField._test_binop_lhs_value_same_zero_vfloat, op=binop))
+        setattr(
+            cls,
+            test_binop_name('unknown'),
+            partialmethod(_TestNumericField._test_binop_unknown, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('none'),
+            partialmethod(_TestNumericField._test_binop_none, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_true'),
+            partialmethod(_TestNumericField._test_binop_type_true, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_pos_int'),
+            partialmethod(_TestNumericField._test_binop_type_pos_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_pos_vint'),
+            partialmethod(_TestNumericField._test_binop_type_pos_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_true'),
+            partialmethod(_TestNumericField._test_binop_value_true, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_pos_int'),
+            partialmethod(_TestNumericField._test_binop_value_pos_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_pos_vint'),
+            partialmethod(_TestNumericField._test_binop_value_pos_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_true'),
+            partialmethod(_TestNumericField._test_binop_lhs_addr_same_true, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_pos_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_pos_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_pos_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_pos_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_true'),
+            partialmethod(_TestNumericField._test_binop_lhs_value_same_true, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_pos_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_pos_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_pos_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_pos_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_neg_int'),
+            partialmethod(_TestNumericField._test_binop_type_neg_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_neg_vint'),
+            partialmethod(_TestNumericField._test_binop_type_neg_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_neg_int'),
+            partialmethod(_TestNumericField._test_binop_value_neg_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_neg_vint'),
+            partialmethod(_TestNumericField._test_binop_value_neg_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_neg_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_neg_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_neg_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_neg_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_neg_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_neg_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_neg_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_neg_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_false'),
+            partialmethod(_TestNumericField._test_binop_type_false, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_zero_int'),
+            partialmethod(_TestNumericField._test_binop_type_zero_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_zero_vint'),
+            partialmethod(_TestNumericField._test_binop_type_zero_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_false'),
+            partialmethod(_TestNumericField._test_binop_value_false, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_zero_int'),
+            partialmethod(_TestNumericField._test_binop_value_zero_int, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_zero_vint'),
+            partialmethod(_TestNumericField._test_binop_value_zero_vint, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_false'),
+            partialmethod(_TestNumericField._test_binop_lhs_addr_same_false, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_zero_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_zero_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_zero_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_zero_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_false'),
+            partialmethod(_TestNumericField._test_binop_lhs_value_same_false, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_zero_int'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_zero_int, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_zero_vint'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_zero_vint, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_pos_float'),
+            partialmethod(_TestNumericField._test_binop_type_pos_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_neg_float'),
+            partialmethod(_TestNumericField._test_binop_type_neg_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_pos_vfloat'),
+            partialmethod(_TestNumericField._test_binop_type_pos_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_neg_vfloat'),
+            partialmethod(_TestNumericField._test_binop_type_neg_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_pos_float'),
+            partialmethod(_TestNumericField._test_binop_value_pos_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_neg_float'),
+            partialmethod(_TestNumericField._test_binop_value_neg_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_pos_vfloat'),
+            partialmethod(_TestNumericField._test_binop_value_pos_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_neg_vfloat'),
+            partialmethod(_TestNumericField._test_binop_value_neg_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_pos_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_pos_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_neg_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_neg_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_pos_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_pos_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_neg_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_neg_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_pos_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_pos_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_neg_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_neg_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_pos_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_pos_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_neg_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_neg_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_zero_float'),
+            partialmethod(_TestNumericField._test_binop_type_zero_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_zero_vfloat'),
+            partialmethod(_TestNumericField._test_binop_type_zero_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_zero_float'),
+            partialmethod(_TestNumericField._test_binop_value_zero_float, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_zero_vfloat'),
+            partialmethod(_TestNumericField._test_binop_value_zero_vfloat, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_zero_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_zero_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_zero_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_zero_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_zero_float'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_zero_float, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_zero_vfloat'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_zero_vfloat, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_complex'),
+            partialmethod(_TestNumericField._test_binop_type_complex, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('type_zero_complex'),
+            partialmethod(_TestNumericField._test_binop_type_zero_complex, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_complex'),
+            partialmethod(_TestNumericField._test_binop_value_complex, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('value_zero_complex'),
+            partialmethod(_TestNumericField._test_binop_value_zero_complex, op=binop),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_complex'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_complex, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_addr_same_zero_complex'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_addr_same_zero_complex, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_complex'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_complex, op=binop
+            ),
+        )
+        setattr(
+            cls,
+            test_binop_name('lhs_value_same_zero_complex'),
+            partialmethod(
+                _TestNumericField._test_binop_lhs_value_same_zero_complex, op=binop
+            ),
+        )
 
     # inject testing methods for each unary operation
     for name, unaryop in _UNARYOPS:
-        setattr(cls, test_unaryop_name('type'), partialmethod(_TestNumericField._test_unaryop_type, op=unaryop))
-        setattr(cls, test_unaryop_name('value'), partialmethod(_TestNumericField._test_unaryop_value, op=unaryop))
-        setattr(cls, test_unaryop_name('addr_same'), partialmethod(_TestNumericField._test_unaryop_addr_same, op=unaryop))
-        setattr(cls, test_unaryop_name('value_same'), partialmethod(_TestNumericField._test_unaryop_value_same, op=unaryop))
-
-    # inject testing methods for each inplace binary operation
-    for name, ibinop in _IBINOPS:
-        setattr(cls, test_ibinop_name('invalid_unknown'), partialmethod(_TestNumericField._test_ibinop_invalid_unknown, op=ibinop))
-        setattr(cls, test_ibinop_name('invalid_none'), partialmethod(_TestNumericField._test_ibinop_invalid_none, op=ibinop))
-        setattr(cls, test_ibinop_name('type_true'), partialmethod(_TestNumericField._test_ibinop_type_true, op=ibinop))
-        setattr(cls, test_ibinop_name('value_true'), partialmethod(_TestNumericField._test_ibinop_value_true, op=ibinop))
-        setattr(cls, test_ibinop_name('type_pos_int'), partialmethod(_TestNumericField._test_ibinop_type_pos_int, op=ibinop))
-        setattr(cls, test_ibinop_name('type_pos_vint'), partialmethod(_TestNumericField._test_ibinop_type_pos_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('value_pos_int'), partialmethod(_TestNumericField._test_ibinop_value_pos_int, op=ibinop))
-        setattr(cls, test_ibinop_name('value_pos_vint'), partialmethod(_TestNumericField._test_ibinop_value_pos_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('type_neg_int'), partialmethod(_TestNumericField._test_ibinop_type_neg_int, op=ibinop))
-        setattr(cls, test_ibinop_name('type_neg_vint'), partialmethod(_TestNumericField._test_ibinop_type_neg_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('value_neg_int'), partialmethod(_TestNumericField._test_ibinop_value_neg_int, op=ibinop))
-        setattr(cls, test_ibinop_name('value_neg_vint'), partialmethod(_TestNumericField._test_ibinop_value_neg_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('type_false'), partialmethod(_TestNumericField._test_ibinop_type_false, op=ibinop))
-        setattr(cls, test_ibinop_name('value_false'), partialmethod(_TestNumericField._test_ibinop_value_false, op=ibinop))
-        setattr(cls, test_ibinop_name('type_zero_int'), partialmethod(_TestNumericField._test_ibinop_type_zero_int, op=ibinop))
-        setattr(cls, test_ibinop_name('type_zero_vint'), partialmethod(_TestNumericField._test_ibinop_type_zero_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('value_zero_int'), partialmethod(_TestNumericField._test_ibinop_value_zero_int, op=ibinop))
-        setattr(cls, test_ibinop_name('value_zero_vint'), partialmethod(_TestNumericField._test_ibinop_value_zero_vint, op=ibinop))
-        setattr(cls, test_ibinop_name('type_pos_float'), partialmethod(_TestNumericField._test_ibinop_type_pos_float, op=ibinop))
-        setattr(cls, test_ibinop_name('type_neg_float'), partialmethod(_TestNumericField._test_ibinop_type_neg_float, op=ibinop))
-        setattr(cls, test_ibinop_name('type_pos_vfloat'), partialmethod(_TestNumericField._test_ibinop_type_pos_vfloat, op=ibinop))
-        setattr(cls, test_ibinop_name('type_neg_vfloat'), partialmethod(_TestNumericField._test_ibinop_type_neg_vfloat, op=ibinop))
-        setattr(cls, test_ibinop_name('value_pos_float'), partialmethod(_TestNumericField._test_ibinop_value_pos_float, op=ibinop))
-        setattr(cls, test_ibinop_name('value_neg_float'), partialmethod(_TestNumericField._test_ibinop_value_neg_float, op=ibinop))
-        setattr(cls, test_ibinop_name('value_pos_vfloat'), partialmethod(_TestNumericField._test_ibinop_value_pos_vfloat, op=ibinop))
-        setattr(cls, test_ibinop_name('value_neg_vfloat'), partialmethod(_TestNumericField._test_ibinop_value_neg_vfloat, op=ibinop))
-        setattr(cls, test_ibinop_name('type_zero_float'), partialmethod(_TestNumericField._test_ibinop_type_zero_float, op=ibinop))
-        setattr(cls, test_ibinop_name('type_zero_vfloat'), partialmethod(_TestNumericField._test_ibinop_type_zero_vfloat, op=ibinop))
-        setattr(cls, test_ibinop_name('value_zero_float'), partialmethod(_TestNumericField._test_ibinop_value_zero_float, op=ibinop))
-        setattr(cls, test_ibinop_name('value_zero_vfloat'), partialmethod(_TestNumericField._test_ibinop_value_zero_vfloat, op=ibinop))
+        setattr(
+            cls,
+            test_unaryop_name('type'),
+            partialmethod(_TestNumericField._test_unaryop_type, op=unaryop),
+        )
+        setattr(
+            cls,
+            test_unaryop_name('value'),
+            partialmethod(_TestNumericField._test_unaryop_value, op=unaryop),
+        )
+        setattr(
+            cls,
+            test_unaryop_name('addr_same'),
+            partialmethod(_TestNumericField._test_unaryop_addr_same, op=unaryop),
+        )
+        setattr(
+            cls,
+            test_unaryop_name('value_same'),
+            partialmethod(_TestNumericField._test_unaryop_value_same, op=unaryop),
+        )
+
+
+class BoolFieldTestCase(_TestNumericField, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = True
+
+    def _create_fc(self, tc):
+        return tc.create_bool_field_class()
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._def = _create_field(self._tc, self._create_fc(self._tc))
+        self._def.value = True
+        self._def_value = True
+        self._def_const = create_const_field(
+            self._tc, self._tc.create_bool_field_class(), self._const_value_setter
+        )
+        self._def_new_value = False
+
+    def test_classes(self):
+        self.assertIs(type(self._def), bt2._BoolField)
+        self.assertIs(type(self._def_const), bt2._BoolFieldConst)
+
+    def test_assign_true(self):
+        raw = True
+        self._def.value = raw
+        self.assertEqual(self._def, raw)
+
+    def test_assign_false(self):
+        raw = False
+        self._def.value = raw
+        self.assertEqual(self._def, raw)
+
+    def test_assign_field_true(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        raw = True
+        field.value = raw
+        self._def.value = field
+        self.assertEqual(self._def, raw)
+
+    def test_assign_field_false(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        raw = False
+        field.value = raw
+        self._def.value = field
+        self.assertEqual(self._def, raw)
+
+    def test_assign_invalid_type(self):
+        with self.assertRaises(TypeError):
+            self._def.value = 17
+
+    def test_str_op(self):
+        self.assertEqual(str(self._def), str(self._def_value))
+
+
+_inject_numeric_testing_methods(BoolFieldTestCase)
 
 
 class _TestIntegerFieldCommon(_TestNumericField):
@@ -820,11 +1215,6 @@ class _TestIntegerFieldCommon(_TestNumericField):
         self._def.value = field
         self.assertEqual(self._def, raw)
 
-    def test_assign_float(self):
-        raw = 123.456
-        self._def.value = raw
-        self.assertEqual(self._def, int(raw))
-
     def test_assign_invalid_type(self):
         with self.assertRaises(TypeError):
             self._def.value = 'yes'
@@ -836,12 +1226,44 @@ class _TestIntegerFieldCommon(_TestNumericField):
         field.value = 1777
         self.assertEqual(field, raw)
 
-    def test_assign_uint_invalid_neg(self):
-        uint_fc = self._tc.create_unsigned_integer_field_class(32)
+    def test_assign_big_uint(self):
+        uint_fc = self._tc.create_unsigned_integer_field_class(64)
+        field = _create_field(self._tc, uint_fc)
+        # Larger than the IEEE 754 double-precision exact representation of
+        # integers.
+        raw = (2 ** 53) + 1
+        field.value = (2 ** 53) + 1
+        self.assertEqual(field, raw)
+
+    def test_assign_uint_out_of_range(self):
+        uint_fc = self._tc.create_unsigned_integer_field_class(8)
         field = _create_field(self._tc, uint_fc)
 
-        with self.assertRaises(ValueError):
-            field.value = -23
+        with self.assertRaises(ValueError) as ctx:
+            field.value = 256
+        self.assertEqual(
+            str(ctx.exception), 'Value 256 is outside valid range [0, 255]'
+        )
+
+        with self.assertRaises(ValueError) as ctx:
+            field.value = -1
+        self.assertEqual(str(ctx.exception), 'Value -1 is outside valid range [0, 255]')
+
+    def test_assign_int_out_of_range(self):
+        int_fc = self._tc.create_signed_integer_field_class(8)
+        field = _create_field(self._tc, int_fc)
+
+        with self.assertRaises(ValueError) as ctx:
+            field.value = 128
+        self.assertEqual(
+            str(ctx.exception), 'Value 128 is outside valid range [-128, 127]'
+        )
+
+        with self.assertRaises(ValueError) as ctx:
+            field.value = -129
+        self.assertEqual(
+            str(ctx.exception), 'Value -129 is outside valid range [-128, 127]'
+        )
 
     def test_str_op(self):
         self.assertEqual(str(self._def), str(self._def_value))
@@ -851,6 +1273,10 @@ _inject_numeric_testing_methods(_TestIntegerFieldCommon)
 
 
 class SignedIntegerFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 17
+
     def _create_fc(self, tc):
         return tc.create_signed_integer_field_class(25)
 
@@ -861,17 +1287,26 @@ class SignedIntegerFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase):
         self._def = _create_field(self._tc, self._create_fc(self._tc))
         self._def.value = 17
         self._def_value = 17
+        self._def_const = create_const_field(
+            self._tc, self._create_fc(self._tc), self._const_value_setter
+        )
         self._def_new_value = -101
 
 
 class SignedEnumerationFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 17
+
     def _create_fc(self, tc):
         fc = tc.create_signed_enumeration_field_class(32)
-        fc.map_range('something', 17)
-        fc.map_range('speaker', 12, 16)
-        fc.map_range('can', 18, 2540)
-        fc.map_range('whole range', -(2 ** 31), (2 ** 31) - 1)
-        fc.map_range('zip', -45, 1001)
+        fc.add_mapping('something', bt2.SignedIntegerRangeSet([(17, 17)]))
+        fc.add_mapping('speaker', bt2.SignedIntegerRangeSet([(12, 16)]))
+        fc.add_mapping('can', bt2.SignedIntegerRangeSet([(18, 2540)]))
+        fc.add_mapping(
+            'whole range', bt2.SignedIntegerRangeSet([(-(2 ** 31), (2 ** 31) - 1)])
+        )
+        fc.add_mapping('zip', bt2.SignedIntegerRangeSet([(-45, 1001)]))
         return fc
 
     def setUp(self):
@@ -880,6 +1315,9 @@ class SignedEnumerationFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase)
         self._def = _create_field(self._tc, self._create_fc(self._tc))
         self._def.value = 17
         self._def_value = 17
+        self._def_const = create_const_field(
+            self._tc, self._create_fc(self._tc), self._const_value_setter
+        )
         self._def_new_value = -101
 
     def test_str_op(self):
@@ -889,8 +1327,7 @@ class SignedEnumerationFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase)
         # Establish all permutations of the three expected matches since
         # the order in which mappings are enumerated is not explicitly part of
         # the API.
-        for p in itertools.permutations(['whole range', 'something',
-                                         'zip']):
+        for p in itertools.permutations(['whole range', 'something', 'zip']):
             candidate = '{} ({})'.format(self._def_value, ', '.join(p))
             if candidate == s:
                 expected_string_found = True
@@ -904,14 +1341,119 @@ class SignedEnumerationFieldTestCase(_TestIntegerFieldCommon, unittest.TestCase)
         self.assertEqual(labels, ['something', 'whole range', 'zip'])
 
 
-class RealFieldTestCase(_TestNumericField, unittest.TestCase):
+class SingleRealFieldTestCase(_TestNumericField, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 52.0
+
+    def _create_fc(self, tc):
+        return tc.create_single_precision_real_field_class()
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._field = _create_field(self._tc, self._create_fc(self._tc))
+        self._def = _create_field(self._tc, self._create_fc(self._tc))
+        self._def_const = create_const_field(
+            self._tc,
+            self._tc.create_single_precision_real_field_class(),
+            self._const_value_setter,
+        )
+        self._def.value = 52.0
+        self._def_value = 52.0
+        self._def_new_value = -17.0
+
+    def _test_invalid_op(self, cb):
+        with self.assertRaises(TypeError):
+            cb()
+
+    def test_assign_true(self):
+        self._def.value = True
+        self.assertTrue(self._def)
+
+    def test_assign_false(self):
+        self._def.value = False
+        self.assertFalse(self._def)
+
+    def test_assign_pos_int(self):
+        raw = 477
+        self._def.value = raw
+        self.assertEqual(self._def, float(raw))
+
+    def test_assign_neg_int(self):
+        raw = -13
+        self._def.value = raw
+        self.assertEqual(self._def, float(raw))
+
+    def test_assign_int_field(self):
+        int_fc = self._tc.create_signed_integer_field_class(32)
+        int_field = _create_field(self._tc, int_fc)
+        raw = 999
+        int_field.value = raw
+        self._def.value = int_field
+        self.assertEqual(self._def, float(raw))
+
+    def test_assign_float(self):
+        raw = -19.23
+        self._def.value = raw
+        # It's expected to have some lost of precision because of the field
+        # that is in single precision.
+        self.assertEqual(round(self._def, 5), raw)
+
+    def test_assign_float_field(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        raw = 101.32
+        field.value = raw
+        self._def.value = field
+        # It's expected to have some lost of precision because of the field
+        # that is in single precision.
+        self.assertEqual(round(self._def, 5), raw)
+
+    def test_assign_invalid_type(self):
+        with self.assertRaises(TypeError):
+            self._def.value = 'yes'
+
+    def test_invalid_lshift(self):
+        self._test_invalid_op(lambda: self._def << 23)
+
+    def test_invalid_rshift(self):
+        self._test_invalid_op(lambda: self._def >> 23)
+
+    def test_invalid_and(self):
+        self._test_invalid_op(lambda: self._def & 23)
+
+    def test_invalid_or(self):
+        self._test_invalid_op(lambda: self._def | 23)
+
+    def test_invalid_xor(self):
+        self._test_invalid_op(lambda: self._def ^ 23)
+
+    def test_invalid_invert(self):
+        self._test_invalid_op(lambda: ~self._def)
+
+    def test_str_op(self):
+        self.assertEqual(str(round(self._def, 5)), str(self._def_value))
+
+
+_inject_numeric_testing_methods(SingleRealFieldTestCase)
+
+
+class DoubleRealFieldTestCase(_TestNumericField, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 52.7
+
     def _create_fc(self, tc):
-        return tc.create_real_field_class()
+        return tc.create_double_precision_real_field_class()
 
     def setUp(self):
         self._tc = get_default_trace_class()
         self._field = _create_field(self._tc, self._create_fc(self._tc))
         self._def = _create_field(self._tc, self._create_fc(self._tc))
+        self._def_const = create_const_field(
+            self._tc,
+            self._tc.create_double_precision_real_field_class(),
+            self._const_value_setter,
+        )
         self._def.value = 52.7
         self._def_value = 52.7
         self._def_new_value = -17.164857
@@ -984,14 +1526,21 @@ class RealFieldTestCase(_TestNumericField, unittest.TestCase):
         self.assertEqual(str(self._def), str(self._def_value))
 
 
-_inject_numeric_testing_methods(RealFieldTestCase)
+_inject_numeric_testing_methods(DoubleRealFieldTestCase)
 
 
 class StringFieldTestCase(unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 'Hello, World!'
+
     def setUp(self):
         self._tc = get_default_trace_class()
         self._def_value = 'Hello, World!'
         self._def = _create_string_field(self._tc)
+        self._def_const = create_const_field(
+            self._tc, self._tc.create_string_field_class(), self._const_value_setter
+        )
         self._def.value = self._def_value
         self._def_new_value = 'Yes!'
 
@@ -1008,6 +1557,9 @@ class StringFieldTestCase(unittest.TestCase):
     def test_eq(self):
         self.assertEqual(self._def, self._def_value)
 
+    def test_const_eq(self):
+        self.assertEqual(self._def_const, self._def_value)
+
     def test_not_eq(self):
         self.assertNotEqual(self._def, 23)
 
@@ -1071,12 +1623,21 @@ class StringFieldTestCase(unittest.TestCase):
     def test_getitem(self):
         self.assertEqual(self._def[5], self._def_value[5])
 
+    def test_const_getitem(self):
+        self.assertEqual(self._def_const[5], self._def_value[5])
+
     def test_append_str(self):
         to_append = 'meow meow meow'
         self._def += to_append
         self._def_value += to_append
         self.assertEqual(self._def, self._def_value)
 
+    def test_const_append_str(self):
+        to_append = 'meow meow meow'
+        with self.assertRaises(TypeError):
+            self._def_const += to_append
+        self.assertEqual(self._def_const, self._def_value)
+
     def test_append_string_field(self):
         field = _create_string_field(self._tc)
         to_append = 'meow meow meow'
@@ -1085,6 +1646,18 @@ class StringFieldTestCase(unittest.TestCase):
         self._def_value += to_append
         self.assertEqual(self._def, self._def_value)
 
+    def test_hash_op(self):
+        with self.assertRaises(TypeError):
+            hash(self._def)
+
+    def test_const_hash_op(self):
+        self.assertEqual(hash(self._def_const), hash(self._def_value))
+
+    def test_const_hash_dict(self):
+        my_dict = {}
+        my_dict[self._def_const] = 'my_value'
+        self.assertEqual(my_dict[self._def_value], 'my_value')
+
 
 class _TestArrayFieldCommon:
     def _modify_def(self):
@@ -1101,7 +1674,12 @@ class _TestArrayFieldCommon:
 
     def test_getitem(self):
         field = self._def[1]
-        self.assertIs(type(field), bt2.field._SignedIntegerField)
+        self.assertIs(type(field), bt2._SignedIntegerField)
+        self.assertEqual(field, 1847)
+
+    def test_const_getitem(self):
+        field = self._def_const[1]
+        self.assertIs(type(field), bt2._SignedIntegerFieldConst)
         self.assertEqual(field, 1847)
 
     def test_eq(self):
@@ -1127,6 +1705,15 @@ class _TestArrayFieldCommon:
         field[2] = 1948754
         self.assertNotEqual(self._def, field)
 
+    def test_eq_non_sequence_iterable(self):
+        dct = collections.OrderedDict([(1, 2), (3, 4), (5, 6)])
+        field = _create_int_array_field(self._tc, 3)
+        field[0] = 1
+        field[1] = 3
+        field[2] = 5
+        self.assertEqual(field, list(dct.keys()))
+        self.assertNotEqual(field, dct)
+
     def test_setitem(self):
         self._def[2] = 24
         self.assertEqual(self._def[2], 24)
@@ -1159,10 +1746,18 @@ class _TestArrayFieldCommon:
         with self.assertRaises(IndexError):
             self._def[len(self._def)] = 134679
 
+    def test_const_setitem(self):
+        with self.assertRaises(TypeError):
+            self._def_const[0] = 134679
+
     def test_iter(self):
         for field, value in zip(self._def, (45, 1847, 1948754)):
             self.assertEqual(field, value)
 
+    def test_const_iter(self):
+        for field, value in zip(self._def_const, (45, 1847, 1948754)):
+            self.assertEqual(field, value)
+
     def test_value_int_field(self):
         values = [45646, 145, 12145]
         self._def.value = values
@@ -1189,21 +1784,9 @@ class _TestArrayFieldCommon:
         array_fc = self._tc.create_static_array_field_class(struct_fc, 3)
         stream = _create_stream(self._tc, [('array_field', array_fc)])
         values = [
-            {
-                'an_int': 42,
-                'a_string': 'hello',
-                'another_int': 66
-            },
-            {
-                'an_int': 1,
-                'a_string': 'goodbye',
-                'another_int': 488
-            },
-            {
-                'an_int': 156,
-                'a_string': 'or not',
-                'another_int': 4648
-            },
+            {'an_int': 42, 'a_string': 'hello', 'another_int': 66},
+            {'an_int': 1, 'a_string': 'goodbye', 'another_int': 488},
+            {'an_int': 156, 'a_string': 'or not', 'another_int': 4648},
         ]
 
         array = stream.create_packet().context_field['array_field']
@@ -1215,12 +1798,15 @@ class _TestArrayFieldCommon:
 
     def test_str_op(self):
         s = str(self._def)
-        expected_string = '[{}]'.format(', '.join(
-            [repr(v) for v in self._def_value]))
+        expected_string = '[{}]'.format(', '.join([repr(v) for v in self._def_value]))
         self.assertEqual(expected_string, s)
 
 
 class StaticArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = [45, 1847, 1948754]
+
     def setUp(self):
         self._tc = get_default_trace_class()
         self._def = _create_int_array_field(self._tc, 3)
@@ -1228,6 +1814,13 @@ class StaticArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
         self._def[1] = 1847
         self._def[2] = 1948754
         self._def_value = [45, 1847, 1948754]
+        self._def_const = create_const_field(
+            self._tc,
+            self._tc.create_static_array_field_class(
+                self._tc.create_signed_integer_field_class(32), 3
+            ),
+            self._const_value_setter,
+        )
 
     def test_value_wrong_len(self):
         values = [45, 1847]
@@ -1236,6 +1829,10 @@ class StaticArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
 
 
 class DynamicArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = [45, 1847, 1948754]
+
     def setUp(self):
         self._tc = get_default_trace_class()
         self._def = _create_dynamic_array(self._tc)
@@ -1243,6 +1840,13 @@ class DynamicArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
         self._def[1] = 1847
         self._def[2] = 1948754
         self._def_value = [45, 1847, 1948754]
+        self._def_const = create_const_field(
+            self._tc,
+            self._tc.create_dynamic_array_field_class(
+                self._tc.create_signed_integer_field_class(32)
+            ),
+            self._const_value_setter,
+        )
 
     def test_value_resize(self):
         new_values = [1, 2, 3, 4]
@@ -1254,12 +1858,28 @@ class DynamicArrayFieldTestCase(_TestArrayFieldCommon, unittest.TestCase):
         self._def[3] = 0
         self.assertEqual(len(self._def), 4)
 
+    def test_const_set_length(self):
+        with self.assertRaises(AttributeError):
+            self._def_const.length = 4
+        self.assertEqual(len(self._def), 3)
+
     def test_set_invalid_length(self):
         with self.assertRaises(TypeError):
             self._def.length = 'cheval'
 
 
 class StructureFieldTestCase(unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = {
+            'A': -1872,
+            'B': 'salut',
+            'C': 17.5,
+            'D': 16497,
+            'E': {},
+            'F': {'F_1': 52},
+        }
+
     def _create_fc(self, tc):
         fc = tc.create_structure_field_class()
         fc.append_member('A', self._fc0_fn())
@@ -1276,7 +1896,7 @@ class StructureFieldTestCase(unittest.TestCase):
         self._tc = get_default_trace_class()
         self._fc0_fn = self._tc.create_signed_integer_field_class
         self._fc1_fn = self._tc.create_string_field_class
-        self._fc2_fn = self._tc.create_real_field_class
+        self._fc2_fn = self._tc.create_double_precision_real_field_class
         self._fc3_fn = self._tc.create_signed_integer_field_class
         self._fc4_fn = self._tc.create_structure_field_class
         self._fc5_fn = self._tc.create_structure_field_class
@@ -1296,9 +1916,13 @@ class StructureFieldTestCase(unittest.TestCase):
             'C': 17.5,
             'D': 16497,
             'E': {},
-            'F': {'F_1': 52}
+            'F': {'F_1': 52},
         }
 
+        self._def_const = create_const_field(
+            self._tc, self._create_fc(self._tc), self._const_value_setter
+        )
+
     def _modify_def(self):
         self._def['B'] = 'hola'
 
@@ -1313,16 +1937,63 @@ class StructureFieldTestCase(unittest.TestCase):
         self.assertEqual(len(self._def), len(self._def_value))
 
     def test_getitem(self):
-        field = self._def['A']
-        self.assertIs(type(field), bt2.field._SignedIntegerField)
-        self.assertEqual(field, -1872)
+        field1 = self._def['A']
+        field2 = self._def['B']
+        field3 = self._def['C']
+        field4 = self._def['D']
+        field5 = self._def['E']
+        field6 = self._def['F']
+
+        self.assertIs(type(field1), bt2._SignedIntegerField)
+        self.assertEqual(field1, -1872)
+
+        self.assertIs(type(field2), bt2._StringField)
+        self.assertEqual(field2, 'salut')
+
+        self.assertIs(type(field3), bt2._DoublePrecisionRealField)
+        self.assertEqual(field3, 17.5)
+
+        self.assertIs(type(field4), bt2._SignedIntegerField)
+        self.assertEqual(field4, 16497)
+
+        self.assertIs(type(field5), bt2._StructureField)
+        self.assertEqual(field5, {})
+
+        self.assertIs(type(field6), bt2._StructureField)
+        self.assertEqual(field6, {'F_1': 52})
+
+    def test_const_getitem(self):
+        field1 = self._def_const['A']
+        field2 = self._def_const['B']
+        field3 = self._def_const['C']
+        field4 = self._def_const['D']
+        field5 = self._def_const['E']
+        field6 = self._def_const['F']
+
+        self.assertIs(type(field1), bt2._SignedIntegerFieldConst)
+        self.assertEqual(field1, -1872)
+
+        self.assertIs(type(field2), bt2._StringFieldConst)
+        self.assertEqual(field2, 'salut')
+
+        self.assertIs(type(field3), bt2._DoublePrecisionRealFieldConst)
+        self.assertEqual(field3, 17.5)
+
+        self.assertIs(type(field4), bt2._SignedIntegerFieldConst)
+        self.assertEqual(field4, 16497)
+
+        self.assertIs(type(field5), bt2._StructureFieldConst)
+        self.assertEqual(field5, {})
+
+        self.assertIs(type(field6), bt2._StructureFieldConst)
+        self.assertEqual(field6, {'F_1': 52})
 
     def test_member_at_index_out_of_bounds_after(self):
         with self.assertRaises(IndexError):
             self._def.member_at_index(len(self._def_value))
 
     def test_eq(self):
-        field = _create_field(self._tc, self._create_fc(self._tc))
+        field = _create_field(self._tc, self._create_fc(self._tc))
         field['A'] = -1872
         field['B'] = 'salut'
         field['C'] = 17.5
@@ -1331,6 +2002,16 @@ class StructureFieldTestCase(unittest.TestCase):
         field['F'] = {'F_1': 52}
         self.assertEqual(self._def, field)
 
+    def test_const_eq(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        field['A'] = -1872
+        field['B'] = 'salut'
+        field['C'] = 17.5
+        field['D'] = 16497
+        field['E'] = {}
+        field['F'] = {'F_1': 52}
+        self.assertEqual(self._def_const, field)
+
     def test_eq_invalid_type(self):
         self.assertNotEqual(self._def, 23)
 
@@ -1394,6 +2075,10 @@ class StructureFieldTestCase(unittest.TestCase):
         self._def['C'] = -18.47
         self.assertEqual(self._def['C'], -18.47)
 
+    def test_const_setitem(self):
+        with self.assertRaises(TypeError):
+            self._def_const['A'] = 134679
+
     def test_setitem_int_field(self):
         int_fc = self._tc.create_signed_integer_field_class(32)
         int_field = _create_field(self._tc, int_fc)
@@ -1426,6 +2111,9 @@ class StructureFieldTestCase(unittest.TestCase):
     def test_member_at_index(self):
         self.assertEqual(self._def.member_at_index(1), 'salut')
 
+    def test_const_member_at_index(self):
+        self.assertEqual(self._def_const.member_at_index(1), 'salut')
+
     def test_iter(self):
         orig_values = {
             'A': -1872,
@@ -1433,7 +2121,7 @@ class StructureFieldTestCase(unittest.TestCase):
             'C': 17.5,
             'D': 16497,
             'E': {},
-            'F': {'F_1': 52}
+            'F': {'F_1': 52},
         }
 
         for vkey, vval in self._def.items():
@@ -1447,7 +2135,7 @@ class StructureFieldTestCase(unittest.TestCase):
             'C': 17.5,
             'D': 16497,
             'E': {},
-            'F': {'F_1': 52}
+            'F': {'F_1': 52},
         }
         self.assertEqual(self._def, orig_values)
 
@@ -1459,11 +2147,7 @@ class StructureFieldTestCase(unittest.TestCase):
         struct_fc.append_member(field_class=int_fc, name='an_int')
         struct_fc.append_member(field_class=str_fc, name='a_string')
         struct_fc.append_member(field_class=another_int_fc, name='another_int')
-        values = {
-            'an_int': 42,
-            'a_string': 'hello',
-            'another_int': 66
-        }
+        values = {'an_int': 42, 'a_string': 'hello', 'another_int': 66}
 
         struct = _create_field(self._tc, struct_fc)
         struct.value = values
@@ -1495,28 +2179,126 @@ class StructureFieldTestCase(unittest.TestCase):
         self.assertTrue(expected_string_found)
 
 
-class VariantFieldTestCase(unittest.TestCase):
+class OptionFieldTestCase(unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = {'opt_field': 'hiboux'}
+
     def _create_fc(self, tc):
-        selector_fc = tc.create_signed_enumeration_field_class(field_value_range=32)
-        selector_fc.map_range('corner', 23)
-        selector_fc.map_range('zoom', 17, 20)
-        selector_fc.map_range('mellotron', 1001)
-        selector_fc.map_range('giorgio', 2000, 3000)
+        fc = tc.create_option_without_selector_field_class(
+            tc.create_string_field_class()
+        )
+        top_fc = tc.create_structure_field_class()
+        top_fc.append_member('opt_field', fc)
+        return top_fc
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        fld = _create_field(self._tc, self._create_fc(self._tc))
+        self._def = fld['opt_field']
+        self._def_value = 'hiboux'
+        self._def_const = create_const_field(
+            self._tc, self._create_fc(self._tc), self._const_value_setter
+        )['opt_field']
+
+    def test_value_prop(self):
+        self._def.value = 'hiboux'
+        self.assertEqual(self._def.field, 'hiboux')
+        self.assertIs(type(self._def), bt2._OptionField)
+        self.assertIs(type(self._def.field), bt2._StringField)
+        self.assertTrue(self._def.has_field)
+
+    def test_const_value_prop(self):
+        self.assertEqual(self._def_const.field, 'hiboux')
+        self.assertIs(type(self._def_const), bt2._OptionFieldConst)
+        self.assertIs(type(self._def_const.field), bt2._StringFieldConst)
+        self.assertTrue(self._def_const.has_field)
+
+    def test_has_field_prop_true(self):
+        self._def.has_field = True
+        self.assertTrue(self._def.has_field)
+
+    def test_has_field_prop_false(self):
+        self._def.has_field = False
+        self.assertFalse(self._def.has_field)
+
+    def test_bool_op_true(self):
+        self._def.value = 'allo'
+        self.assertTrue(self._def)
+
+    def test_bool_op_false(self):
+        self._def.has_field = False
+        self.assertFalse(self._def)
+
+    def test_field_prop_existing(self):
+        self._def.value = 'meow'
+        field = self._def.field
+        self.assertEqual(field, 'meow')
+
+    def test_field_prop_none(self):
+        self._def.has_field = False
+        field = self._def.field
+        self.assertIsNone(field)
+
+    def test_const_field_prop(self):
+        with self.assertRaises(AttributeError):
+            self._def_const.has_field = False
+
+        self.assertEqual(self._def_const, self._def_value)
+        self.assertTrue(self._def_const.has_field)
+
+    def test_field_prop_existing_then_none(self):
+        self._def.value = 'meow'
+        field = self._def.field
+        self.assertEqual(field, 'meow')
+        self._def.has_field = False
+        field = self._def.field
+        self.assertIsNone(field)
+
+    def test_eq(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        field = field['opt_field']
+        field.value = 'walk'
+        self._def.value = 'walk'
+        self.assertEqual(self._def, field)
+
+    def test_const_eq(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        field = field['opt_field']
+        field.value = 'hiboux'
+        self.assertEqual(self._def_const, field)
+        self.assertEqual(self._def_const, self._def_value)
+
+    def test_eq_invalid_type(self):
+        self._def.value = 'gerry'
+        self.assertNotEqual(self._def, 23)
+
+    def test_str_op(self):
+        self._def.value = 'marcel'
+        self.assertEqual(str(self._def), str(self._def.field))
+
+    def test_repr_op(self):
+        self._def.value = 'mireille'
+        self.assertEqual(repr(self._def), repr(self._def.field))
+
 
+class VariantFieldTestCase(unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.selected_option_index = 3
+        field.value = 1334
+
+    def _create_fc(self, tc):
         ft0 = tc.create_signed_integer_field_class(32)
         ft1 = tc.create_string_field_class()
-        ft2 = tc.create_real_field_class()
+        ft2 = tc.create_double_precision_real_field_class()
         ft3 = tc.create_signed_integer_field_class(17)
-
         fc = tc.create_variant_field_class()
         fc.append_option('corner', ft0)
         fc.append_option('zoom', ft1)
         fc.append_option('mellotron', ft2)
         fc.append_option('giorgio', ft3)
-        fc.selector_field_class = selector_fc
-
         top_fc = tc.create_structure_field_class()
-        top_fc.append_member('selector_field', selector_fc)
         top_fc.append_member('variant_field', fc)
         return top_fc
 
@@ -1525,6 +2307,15 @@ class VariantFieldTestCase(unittest.TestCase):
         fld = _create_field(self._tc, self._create_fc(self._tc))
         self._def = fld['variant_field']
 
+        self._def_value = 1334
+        self._def_selected_index = 3
+        const_fc = self._create_fc(self._tc)['variant_field']
+
+        fld_const = create_const_field(
+            self._tc, const_fc.field_class, self._const_value_setter
+        )
+        self._def_const = fld_const
+
     def test_bool_op(self):
         self._def.selected_option_index = 2
         self._def.value = -17.34
@@ -1535,14 +2326,35 @@ class VariantFieldTestCase(unittest.TestCase):
         self._def.selected_option_index = 2
         self.assertEqual(self._def.selected_option_index, 2)
 
+    def test_selected_option_index_above_range(self):
+        with self.assertRaises(IndexError):
+            self._def.selected_option_index = 4
+
+    def test_selected_option_index_below_range(self):
+        with self.assertRaises(IndexError):
+            self._def.selected_option_index = -1
+
+    def test_const_selected_option_index(self):
+        with self.assertRaises(AttributeError):
+            self._def_const.selected_option_index = 2
+        self.assertEqual(self._def_const.selected_option_index, 3)
+
     def test_selected_option(self):
         self._def.selected_option_index = 2
         self._def.value = -17.34
         self.assertEqual(self._def.selected_option, -17.34)
+        self.assertEqual(type(self._def.selected_option), bt2._DoublePrecisionRealField)
 
         self._def.selected_option_index = 3
         self._def.value = 1921
         self.assertEqual(self._def.selected_option, 1921)
+        self.assertEqual(type(self._def.selected_option), bt2._SignedIntegerField)
+
+    def test_const_selected_option(self):
+        self.assertEqual(self._def_const.selected_option, 1334)
+        self.assertEqual(
+            type(self._def_const.selected_option), bt2._SignedIntegerFieldConst
+        )
 
     def test_eq(self):
         field = _create_field(self._tc, self._create_fc(self._tc))
@@ -1553,6 +2365,16 @@ class VariantFieldTestCase(unittest.TestCase):
         self._def.value = 1774
         self.assertEqual(self._def, field)
 
+    def test_const_eq(self):
+        field = _create_field(self._tc, self._create_fc(self._tc))
+        field = field['variant_field']
+        field.selected_option_index = 3
+        field.value = 1334
+        self.assertEqual(self._def_const, field)
+
+    def test_len(self):
+        self.assertEqual(len(self._def), 4)
+
     def test_eq_invalid_type(self):
         self._def.selected_option_index = 1
         self._def.value = 'gerry'
@@ -1590,3 +2412,7 @@ class VariantFieldTestCase(unittest.TestCase):
         other_field.selected_option_index = 2
         other_field.value = 14.4245
         self.assertEqual(str(field), str(other_field))
+
+
+if __name__ == '__main__':
+    unittest.main()
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